Umarex H&K USP Part 5

Umarex H&K USP Part 5 Part 4 Part 3 Part 2 Part 1

Training Day

By Dennis Adler

The beauty of paddle holsters is their ease of use. It doesn’t matter what type or size pistol, a paddle rig is usually more comfortable to wear than a belt holster or an IWB rig. The paddle curves so that it fits around the side and hips and contours to the wearer’s body. An injection molded belt hook, on the inside of the paddle catches under the wearer’s belt (from inside the pant’s waist) and this secures the paddle. The Sig-Tac models are also adjustable for cant so the gun (or magazines) can be set to a comfortable angle. In the top left photo you can see the at gun and holster pouch are angled just slightly forward.

Let’s recap the features and advantages of the new Umarex HK USP blowback action model. This is a 1:1 CO2 pistol in the standard HK V1 configuration: DA/SA with safety/decocking lever on the left side. It accepts all of the Universal mount equipment made for the centerfire models as well as the USP Picatinny rail adapter. The Umarex has the identical ambidextrous dual magazine release lever integrated into the bottom of the triggerguard. Developed in the early 1990s for the U.S. Army under the SOCOM project (United States Special Operation Command), the USP uses a polymer frame (injection-molded polyamide). As an historical footnote, Heckler & Koch was the first armsmaker to use a polymer frame, predating the Glock 17 by over a decade with the VP70. The centerfire USP and CO2 model share a common Browning-based short-recoil, locked breech design, that is modified for blowback action in the air pistol, but very close in appearance, operation, and virtually identical for field stripping.

Comfortably placed around the author’s waist, the gun is positioned for ease of draw and the magazine pouch to allow a quick retrieval of a fresh magazine. For concealed carry the dual mag pouch would need to me further back around the waist for cover. With paddles you can easily slide the entire rig into a different position as needed.

The cartridge firing HK USP weighs an average of 29.5 ounces (with an empty magazine), has an overall length of 7.68 inches, width of 1.26 inches and barrel length of 4.25 inches.  The overall weight of the USP CO2 model (with empty magazine) is 34.2 ounces due to the weight of the all-metal CO2 magazine. Overall length is 7.7 inches, width 1.26 inches and internal smoothbore barrel length 4.25 inches. Trigger pull on the centerfire gun averages around 5 pounds fired single action and a robust 12 pounds average double action. The CO2 model stacks up pretty close with an average SA trigger press of 5 pounds, 1.5 ounces and a DA pull of 11 pounds 8.0 ounces (and de-cocked trigger pull of 8 pounds average). Like 9mm, .40 S&W and .45 ACP models, the DA pull is a long 0.68 inches but it is smooth and the hammer comes back quickly as you pull through. There is zero over travel, and of course, after the first round the gun fires single action unless it is de-cocked. SA take up is 0.25 inches and reset is 0.25 inches.

For the drawing practice with the Sig-Tac Level 1 locking holster and the Umarex HK USP, the trigger finger must fully depress the locking release on the side of the holster. This is a natural position for the trigger finger which is also properly extended to fall against the side of the slide when the pistol is drawn rather than into the triggerguard.

Shop PCP Rifles

In my training drill I performed drawing from the Sig-Tac Level 1 locking holster, firing to empty, dropping the magazine, reloading and firing, and a tactical reload. The Umarex HK USP performed without a hitch, duplicating the handling of the centerfire gun right up to the moment the trigger was pulled.

For a firing drill I took aim at a full size B-27 silhouette target and fired double taps and multiple shots until the gun was empty (16 shots)…
…soon as the slide locked back I used by trigger finger to activate the magazine release while rotating the gun upward in my strong hand and using my support hand to get a magazine.
The magazines are positioned with ammo forward (base pad forward) in the pouch so that when I grab a mag with my support hand and rotate my wrist up and around it is in the right orientation to insert the magazine into the magwell. You do not need to bring the gun up this far to reload, I’m over emphasizing to better illustrate the orientation of the gun and magazine.

As mentioned in the earlier shooting tests, the slide has a firm draw when chambering the first round (heavier than almost any other blowback action model) and there is more than ample felt recoil for an air pistol when firing. As a training gun, the Umarex HK USP is right up with the Umarex S&W M&P40 for absolute training value in the field and indoors.

As soon as the magazine is loaded into the grip I drop the slide and fall back into a Weaver stance to begin firing a second practice session. I repeated this through all three magazines. This was for speed and consistency with the goal of keeping shots within the center mass of the silhouette target. The HK performed perfectly as a training gun.

USP Tactical red laser at 21 feet

In a short range test, the NcStar red laser guided a full magazine, 16-rounds, into a spread of 1.12 inches with a best group of 12 shots measuring 0.62 inches with 8 rounds overlapping. This is the right tool for the job as a training gun in CO2, or for use with the centerfire pistol. Familiarity with the same device is always a training plus and the Umarex HK USP has everything going for it!

At 21 feet the red laser painted the target clearly even against red, and I shot out an entire 16-round magazine at 1-second intervals. There are 8 shots overlapping, another four very close and four separate shots almost in a line from 6 o’clock up to the center of the red. Total 16-shot group measured 1.12 inches.
Of the two rail accessories, I decided to test the dedicated USP red laser sold by HKparts. This is a perfect fit for the air pistol. It took a few shots to get the laser in alignment with the white dot sights and adjust for BBs traveling at around 300 fps.

8 thoughts on “Umarex H&K USP Part 5”

  1. Nice looking gun;my only concern is the mag which seems to have the same design as the 1911.
    For me this means there is a strong possibility of leaks after which I will find that unless I restrict the load to 7/8 BBs I will find the action jammed by BBs which have multi loaded. The design of Mag on the PPS is better as it has a metal loading tube closed at the top. The PPS has never had any feeding problems and must have shot 1000s of BBs in the more than a year I have had it.

    • Derek

      The magazine for the USP is built like a tank. It is heavy, solid, well made, easier to load than the M&P40 mags (which have not failed to my knowledge). And it is nothing like the 1911 mags except in general design. I would be surprised if you have problems with HK USP CO2 magazines.


      • Dennis,

        Unfortunately and very disappointingly, my USP magazine is unable to pierce the seal on any of the five different Crosman, one Daisy, one Gamo, and one Umarex 12 gram carts I tried in it. I was not able to fire the pistol even once. It seems to be an example of terrible quality control at the factory.

        So, my HK USP is a dog, a defective dog that won’t hunt. It’s going back to Pyramyd Air in exchange for a refund.

        My advice to any readers is to avoid this HK USP.



        • Michael:

          Sorry to hear this. The problem would be with the magazine not the USP. I would suggest purchasing another magazine first and seeing if that is the issue. PA would refund you for the other magazine or replace it if it is defective. I wouldn’t call the USP a dog just yet, mine is a show dog, so see if you can give this another go. I shoot a lot of CO2 through a lot of guns with self-contained CO2 BB magazines and it is not that common of a problem. I have had it happed a couple of times over the years, and it is almost always a magazine issue, not the air pistol.


          • Dennis,

            It is definitely the magazine, but I have had dozens and dozens of CO2 pistols and revolvers (and a few rifles) over the years, and with the few that had a piercing issue, going with a different brand of CO2 cart or using a micrometer to sort Crosman ones solved the issue. This one is a first for me. The magazine leaves a dimple in each CO2 cartridge, but fails to pierce it.

            I had to fiddle a little with the drop out magazine for my blow-back S&W M&P40, but pretty soon it was up and running (and a lot of fun to shoot). But this took the better part of an hour of fussing with no positive results.

            This is a very nice looking and feeling air pistol, but I don’t collect non-firing replicas. There are too many other very nice CO2 blow-back pistols out there to choose from to mess around with this one any longer, so it’s going back for a refund.


    • Derek,

      Taking the baby from the bath before throwing out the dirty water is easy. Sending in a defective part (the BB/CO2 magazine) to P.A. and waiting for them to send me a new one is more involved than simply sending the whole air pistol back.

      The pistol looked great and felt great in the hand, but without the ability to shoot a projectile, it would be a $100 wall-hanger and nothing more.


      • Everyone disregard Michael’s comment. Every batch of anything is always going to have a few defective ones. Just because he had a bad experience doesn’t mean all of them are going to come out like his. As an owner of the gun, mine pierced just fine, it shoots great, and feels great. To let negative nancies like that discourage you from trying it out.

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